CN219601865U - Tray for holding food - Google Patents

Abstract

The utility model relates to the field of bearing appliances, and aims to solve the problem that parts are easy to crush when trays are stacked. The tray comprises a bearing part, a first supporting part and a second supporting part. The first supporting part comprises a first supporting surface and a plurality of first step surfaces, the first step surfaces are formed by sinking from the first supporting surface, the second supporting part comprises a second supporting surface and a plurality of second step surfaces, the second step surfaces are formed by sinking from the second supporting surface, the first supporting part and the second supporting part are arranged on two sides of the bearing part along the first direction, and the first step surfaces and the second step surfaces are staggered along the first direction. The tray that this embodiment provided, when stacking the tray, horizontal rotation tray 180, put the tray so and can avoid first tray to fall into in the second tray, make interval one section distance between first tray and the second tray to reach the effect that prevents first tray and the mutual extrusion of second tray, avoid the part in the pressure injury tray.

Description

Tray for holding food

Technical Field

The present utility model relates to a carrier, and in particular to a tray.

Background

After the product is processed, the product may be loaded in a tray in some cases to facilitate transportation, storage, etc. To improve the efficiency of transportation, trays are often stacked in a pile so that a plurality of trays are transported at once. In the prior art, when the trays are stacked, the trays are easy to squeeze each other, so that parts in the trays are crushed. How to solve this problem is a consideration for the person skilled in the art.

Disclosure of Invention

The utility model provides a tray, which solves the problem that parts are easy to crush when the trays are stacked.

Embodiments of the present utility model provide a tray including a carrying portion, a first supporting portion, and a second supporting portion. The bearing part is used for placing parts. The first supporting portion comprises a first supporting surface and a plurality of first step surfaces, the first step surfaces are formed by sinking from the first supporting surface, and the first step surfaces are arranged at intervals. The second supporting portion comprises a second supporting surface and a plurality of second step surfaces, the second step surfaces are formed by downwards sinking the second supporting surface, a plurality of second step surfaces are arranged at intervals, the first supporting portion and the second supporting portion are arranged on two sides of the bearing portion along a first direction, and the first step surfaces and the second step surfaces are staggered along the first direction.

Compared with the trays in the prior art, when the trays are stacked, the trays are horizontally rotated by 180 degrees, so that the first supporting part of the first tray corresponds to the second supporting part of the second tray, the second supporting part of the first tray corresponds to the first supporting part of the first tray, and the first step surface and the second step surface are staggered along the first direction, so that the first step surface of the first tray and the second step surface of the second tray are staggered along the height direction, and the first step surface of the first tray corresponds to the second supporting surface of the second tray along the height direction; therefore, the second step surface of the first tray is staggered with the first step surface of the second tray in the height direction, so that the second step surface of the first tray corresponds to the first supporting surface of the second tray in the height direction. So put the tray and can avoid first tray to fall into in the second tray, make a section distance between first tray and the second tray to reach the effect that prevents first tray and the mutual extrusion of second tray, avoid the part in the pressure injury tray.

In one possible embodiment, the bearing part is provided with a plurality of accommodating cavities, a plurality of accommodating cavities are arranged at intervals, and the accommodating cavities are used for accommodating the parts.

In one possible embodiment, the carrier has a third stepped surface formed concavely. The bearing part comprises a first side wall and a second side wall, the first side wall and the second side wall form the accommodating cavity, the first side wall and the second side wall are oppositely arranged along a second direction, the third step surface is at least arranged on one of the first side wall and the second side wall, and the second direction is perpendicular to the first direction.

In one possible embodiment, the receiving chamber has an opening and a bottom wall, the distance between the first side wall and the second side wall increasing from the bottom wall towards the opening.

In one possible implementation manner, the tray further includes a plurality of fixing structures, a plurality of fixing structures are arranged in the accommodating cavity at intervals, the fixing structures are connected to the bottom wall of the accommodating cavity, the fixing structures are used for positioning and fixing the parts, and the third step surface is arranged between two adjacent fixing structures.

In one possible implementation manner, the fixing structure comprises a boss and a positioning rib, the boss is arranged between the first side wall and the second side wall, the positioning rib is distributed in the circumferential direction of the boss, the part is placed on the boss, the peripheral surface of the part is provided with a groove, the groove is matched with the positioning rib, and the positioning rib is used for fixing the part.

In one possible embodiment, the second support is provided with a cutout for distinguishing the direction of placement of the trays.

In one possible implementation manner, the tray further includes a third supporting portion and a fourth supporting portion, the third supporting portion and the fourth supporting portion are disposed on two sides of the bearing portion along the second direction, the first supporting portion, the second supporting portion, the third supporting portion and the fourth supporting portion are sequentially connected and enclosed around the bearing portion, and the second direction is perpendicular to the first direction.

In one possible embodiment, the tray further includes a side wall connected to the periphery of the first support portion, the second support portion, the third support portion, and the fourth support portion, the side wall extending toward a position lower than the bearing portion.

In one possible embodiment, the bearing portion is symmetrical along a first axis and a second axis, the first axis and the second axis being perpendicular.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a tray according to an embodiment of the present utility model;

FIG. 2 is a front view of the tray of FIG. 1;

FIG. 3 is a cross-sectional view of the pallet of FIG. 2, when stacked, taken along line III-III;

FIG. 4 is a schematic view of the tray of FIG. 2, when stacked, rotated horizontally and then taken along line IV-IV;

figure 5 is a cross-sectional view of the pallet of figure 2, taken along line v-v when stacked;

fig. 6 is a perspective view of the tray of fig. 1 in use.

Description of main reference numerals:

tray 1

The bearing part 11

Part 111

Groove 1111

First direction 112

Accommodation chamber 113

Opening 114

Bottom wall 115

Third step surface 116

First side wall 117

Second sidewall 118

Second direction 119

First support portion 12

First support surface 121

First step surface 122

Second support portion 13

Second supporting surface 131

Second step surface 132

Cut 133

Fixing structure 14

Boss 141

Positioning rib 142

Third support portion 15

Fourth support portion 16

Side wall 17

First side wall 171

Second side wall 172

First axis 18

Second axis 19

Work bench 2

First station 21

Second station 22

Third station 23

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the utility model are described in detail below. The following embodiments and features of the embodiments may be combined with each other without collision.

Referring to fig. 1 to 6, the present embodiment provides a tray 1, which includes a carrying portion 11, a first supporting portion 12 and a second supporting portion 13. The carrying portion 11 is used for placing the part 111. The first support portion 12 includes a first support surface 121 and a plurality of first step surfaces 122, the first step surfaces 122 being recessed from the first support surface 121, the plurality of first step surfaces 122 being disposed at intervals. The second supporting portion 13 includes a second supporting surface 131 and a plurality of second step surfaces 132, the second step surfaces 132 are formed by recessing from the second supporting surface 131, the plurality of second step surfaces 132 are arranged at intervals, the first supporting portion 12 and the second supporting portion 13 are arranged on two sides of the bearing portion 11 along the first direction 112, and the first step surfaces 122 and the second step surfaces 132 are staggered along the first direction 112.

In the tray 1 provided in this embodiment, when stacking the trays 1, the trays 1 are horizontally rotated by 180 ° so that the first supporting portion 12 of the first tray 1 corresponds to the second supporting portion 13 of the second tray 1, the second supporting portion 13 of the first tray 1 corresponds to the first supporting portion 12 of the first tray 1, and the first step surface 122 and the second step surface 132 are staggered along the first direction 112, so that the first step surface 122 of the first tray 1 and the second step surface 132 of the second tray 1 are staggered in the height direction, and the first step surface 122 of the first tray 1 corresponds to the second supporting surface 131 of the second tray 1 in the height direction; the second step surface 132 of the first pallet 1 is thus shifted in the height direction from the first step surface 122 of the second pallet 1, so that the second step surface 132 of the first pallet 1 corresponds in the height direction to the first support surface 121 of the second pallet 1. Thus, the first tray 1 can be prevented from falling into the second tray 1 by placing the trays 1, and a distance is reserved between the first tray 1 and the second tray 1, so that the first tray 1 and the second tray 1 are prevented from being mutually extruded, and the parts 111 in the trays 1 are prevented from being crushed.

As shown in fig. 3, if the trays 1 are not horizontally rotated when stacking the trays 1, the first support portion 12 of the first tray 1 corresponds to the first support portion 12 of the second tray 1, the second support portion 13 of the first tray 1 corresponds to the second support portion 13 of the second tray 1, so that the first step surface 122 of the first tray 1 falls into the first step surface 122 of the second tray 1, the first support surface 121 of the first tray 1 falls into the first support surface 121 of the second tray 1, and the first tray 1 and the second tray 1 are stacked together, and the parts 111 are easily crushed by the trays 1. At this time, the tray 1 is not only easy to crush the parts 111, but also easy to squeeze each other between two adjacent stacked trays 1 to be jammed when the parts 111 are not placed in the tray 1, so that the trays 1 are not easy to separate when the trays 1 are taken. On the other hand, when the parts 111 are not placed in the tray 1, since the distance between the stacked trays 1 is small, the overall height of the stacked trays 1 is low, which is advantageous in saving the space for placing the trays 1.

In the pallet 1 in this embodiment, by setting the structure that the first step surface 122 and the second step surface 132 are staggered along the first direction 112, the pallet 1 rotates horizontally by 180 ° to increase the height-direction distance between the stacked pallets 1, so that the pallet 1 can be prevented from damaging the parts 111 by pressing, and the pallets 1 can be prevented from being mutually squeezed and clamped.

Alternatively, the tray 1 is substantially rectangular parallelepiped. The first supporting part 12 and the second supporting part 13 may have a group, and are respectively arranged at a group of opposite sides of the bearing part 11; the first supporting portion 12 and the second supporting portion 13 may have two sets, and are disposed at two opposite sides of the carrying portion 11. When in use, the tray 1 rotates 180 degrees horizontally, so that the first step surface 122 formed by the concave depression of the tray 1 is supported on the second supporting surface 131 of the other tray 1, thereby supporting the two trays 1 at a certain height, and avoiding the part 111 from being crushed by the tray 1.

In other embodiments, the trays 1 may be disc-shaped, so long as the first supporting portion 12 of one tray 1 and the first supporting portion 12 of the other tray 1 are horizontally rotated and staggered by a certain angle when stacking the trays 1, so that the first step surface 122 of one tray 1 is supported on the second supporting surface 131 of the other tray 1, and the two trays 1 are mutually supported by a certain height, thereby avoiding the parts 111 from being crushed by the trays 1. The present embodiment is not limited to the shape of the tray 1.

In one embodiment, the carrying portion 11 is provided with a plurality of accommodating cavities 113, the plurality of accommodating cavities 113 are arranged at intervals, and the accommodating cavities 113 are used for accommodating the parts 111.

Optionally, the accommodating cavity 113 is formed by recessing from the plane of the bearing part 11, and the accommodating cavity 113 has a certain depth for accommodating the part 111, so that the position of the part 111 when placed on the tray 1 is relatively stable, which is beneficial to preventing the part 111 from being damaged due to shaking and dislocation during transportation. The accommodating cavities 113 are elongated extending along the first direction 112, and a plurality of parts 111 can be placed in each accommodating cavity 113 at intervals, so that the number of parts 111 carried by the tray 1 can be increased, and the transportation efficiency of the parts 111 can be improved.

Referring to fig. 4 and fig. 5, in an embodiment, the carrying portion 11 has a third step surface 116 formed by recessing. The bearing part 11 comprises a first side wall 117 and a second side wall 118, the first side wall 117 and the second side wall 118 form a containing cavity 113, the first side wall 117 and the second side wall 118 are oppositely arranged along a second direction 119, the third step surface 116 is at least arranged on one of the first side wall 117 and the second side wall 118, and the second direction 119 is perpendicular to the first direction 112.

In the present embodiment, the tray 1 carries the plurality of parts 111, and the weight of the plurality of parts 111 easily causes the carrying portion 11 of the tray 1 to be bent and deformed, which easily causes the adjacent two trays 1 to crush the parts 111 when stacked. The strength of the bearing portion 11 is increased by providing the first and second side walls 117 and 118, so that the receiving cavity 113 is not easily deformed when receiving the part 111.

Further, a third step surface 116 is provided at the first side wall 117 and the second side wall 118, so that the third step surface 116 plays a supporting role when the trays 1 are stacked together after being horizontally rotated. The third step surfaces 116 may be staggered between the first side wall 117 and the second side wall 118, so that after the trays 1 rotate horizontally, the third step surface 116 of the first tray 1 does not correspond to the third step surface 116 of the second tray 1 in the stacking direction, and the third step surface 116 of the first tray 1 is supported on the carrying portion 11 of the second tray 1. The third step surface 116 thus forms a support between the respective accommodation cavities 113, avoiding the bearing portion 11 from being deformed by the weight of the parts 111 to prevent the parts 111 in the accommodation cavities 113 from being crushed by the tray 1. The third step surface 116, the first step surface 122 and the second step surface 132 support the tray 1 together, so that the parts 111 in the accommodating cavity 113 are prevented from being crushed by the tray 1.

In one embodiment, the accommodating cavity 113 has an opening 114 and a bottom wall 115, and a distance between the first side wall 117 and the second side wall 118 gradually increases from the bottom wall 115 toward the opening 114. The first side wall 117 and the second side wall 118 serve as guides when the trays 1 are stacked, and the distance between the first side wall 117 and the second side wall 118 is large at the opening 114, so that the upper tray 1 is stacked on the lower tray 1.

In an embodiment, the tray 1 further includes a plurality of fixing structures 14, the plurality of fixing structures 14 are disposed in the accommodating cavity 113 at intervals, the fixing structures 14 are connected to the bottom wall 115 of the accommodating cavity 113, the fixing structures 14 are used for positioning the fixing parts 111, and a third step surface 116 is disposed between two adjacent fixing structures 14.

Further, the fixing structures 14 are in one-to-one correspondence with the parts 111, the fixing structures 14 enable the positions of the parts 111 in the accommodating cavity 113 to be fixed, the parts 111 are placed in the accommodating cavity 113 in a more orderly mode, and the parts 111 are prevented from being misplaced and crushed after the tray 1 horizontally rotates.

In an embodiment, the fixing structure 14 includes a boss 141 and a positioning rib 142, the boss 141 is disposed between the first side wall 117 and the second side wall 118, the positioning rib 142 is distributed in a circumferential direction of the boss 141, the part 111 is disposed on the boss 141, a groove 1111 is formed on a circumferential surface of the part 111, the groove 1111 is matched with the positioning rib 142, and the positioning rib 142 is used for fixing the part 111.

In this embodiment, the part 111 is a cover, and three grooves 1111 are distributed on the peripheral surface of the cover. The fixing structure 14 is correspondingly provided with three positioning ribs 142, the three positioning ribs 142 are uniformly distributed on the circumference of the boss 141, and the positioning ribs 142 extend into the grooves 1111 to fix the part 111, so that the part 111 is prevented from rotating horizontally. The positioning ribs 142 are respectively connected with the first side wall 117 and the second side wall 118, so that the strength of the first side wall 117 and the second side wall 118 can be increased, and the bearing part 11 is prevented from being bent by the part 111.

In one embodiment, the second supporting portion 13 is provided with a notch 133, and the notch 133 is used to distinguish the placement direction of the tray 1. After horizontally rotating the tray 1, the position of the slit 133 is changed to the other side of the tray 1, thereby distinguishing whether zero trays 1 are horizontally rotated by an angle with each other. In other embodiments, the notch 133 may be provided in the first support portion 12, and the second support portion 13 is not provided for distinguishing the first support portion 12 from the second support portion 13.

In an embodiment, the tray 1 further includes a third supporting portion 15 and a fourth supporting portion 16, the third supporting portion 15 and the fourth supporting portion 16 are disposed on two sides of the bearing portion 11 along the second direction 119, the first supporting portion 12, the second supporting portion 13, the third supporting portion 15 and the fourth supporting portion 16 are sequentially connected and enclosed around the bearing portion 11, and the second direction 119 is perpendicular to the first direction 112.

In an embodiment, the tray 1 further includes a side wall 17, where the side wall 17 is connected to the periphery of the first support portion 12, the second support portion 13, the third support portion 15, and the fourth support portion 16, and the side wall 17 extends toward a position lower than the bearing portion 11.

The side wall 17 is used to support the first support portion 12, the second support portion 13, the third support portion 15, and the fourth support portion 16 of the tray 1. The side wall 17 includes a first side wall 171 and a second side wall 172, the first side wall 171 is connected to the circumference of the first support 12, the second support 13, the third support 15 and the fourth support 16, the first side wall 171 extends along the stacking direction of the pallet 1, the second side wall 172 is connected to the bottom of the second side wall 172, and the second side wall 172 extends along the horizontal direction, so that the first side wall 171 and the second side wall 172 jointly encircle and support the first support 12, the second support 13, the third support 15 and the fourth support 16. The first side wall 171 and the second side wall 172 can increase the strength of the circumference of the pallet 1, prevent the pallet 1 from being deformed during transportation, and facilitate protecting the parts 111 in the intermediate bearing part 11.

In an embodiment, the bearing portion 11 is symmetrical along a first axis 18 and a second axis 19, and the first axis 18 and the second axis 19 are perpendicular.

In this embodiment, the tray 1 is substantially rectangular, the tray 1 has two symmetry axes of the first axis 18 and the second axis 19, and after the part 111 is filled with the accommodating cavity 113, the part 111 is symmetrical in the tray 1 along the first axis 18 and the second axis 19. Thus, when the part 111 is placed, the position of the whole part 111 is unchanged compared with that before the part 111 horizontally rotates in the tray 1 after the part 111 horizontally rotates 180 degrees, so that the part 111 is convenient for a manipulator to grasp. When the manipulator grabs the parts 111 before and after horizontal rotation, the coordinates grabbed by the manipulator are not changed, and the manipulator can grab the corresponding parts 111, so that automatic feeding of the parts 111 before and after transportation is facilitated.

As shown in fig. 6, in use, the tray 1 in the present embodiment is placed on a table 2, and the table 2 includes a first station 21, a second station 22, and a third station 23. The first station 21 is used for placing the parts 111 on the pallet 1, the second station 22 is used for stacking the pallet 1 full of the parts 111, and the third station 23 is used for stacking the empty pallet 1. As shown, the trays 1 are stacked together, which is advantageous in saving space and enabling the job site to be orderly.

First, the empty trays 1 are stacked at the third station 23, and in order to reduce the stacking height of the trays 1, the trays 1 may not be horizontally rotated, and the first support portions 12 of the upper and lower trays 1 may be aligned with the first support portions 12, and the second support portions 13 may be aligned with the second support portions 13, so that the accommodating chambers 113 of the upper and lower trays 1 are bonded together. The upper and lower adjacent trays 1 are not supported high, at this time, the parts 111 are not placed in the trays 1, the parts 111 are not crushed, and the trays 1 are stacked to save the height space.

Then, the tray 1 of the third station 23 is moved to the first station 21, the produced parts 111 are sequentially placed in the accommodating cavity 113 of the tray 1, and after the first tray 1 is full of the parts 111, the first tray 1 is moved to the second station 22; then the second pallet 1 is moved to the first station 21, and after the second pallet 1 is fully filled with the parts 111, the second pallet 1 is horizontally rotated 180 degrees and then stacked on the first pallet 1 of the second station 22. At this time, the first supporting portion 12 of the second tray 1 corresponds to the second supporting portion 13 of the first tray 1, the first step surface 122 of the second tray 1 is supported on the second supporting surface 131 of the first tray 1, and the second tray 1 is lifted by a certain height. In this way, the first tray 1 is spaced from the second tray 1 by a distance that prevents the parts 111 in the trays 1 from being crushed. The trays 1 are stacked in sequence, and the trays 1 are mutually supported, so that the part 111 can be prevented from being damaged by pressing when stacking the trays 1.

Finally, the stacked pallet 1 filled with the parts 111 is transported to the next station for operation. Because the parts 111 in the trays 1 are symmetrically placed, when the manipulator takes out the parts 111 in the stacked trays 1, the picking coordinates of the manipulator do not need to be changed greatly, and the manipulator can take all the parts 111 in the trays 1 by only adjusting the height coordinates of the upper and lower trays 1 when picking.

In summary, the present embodiment provides a tray 1, which includes a carrying portion 11, a first supporting portion 12 and a second supporting portion 13. The carrying portion 11 is used for placing the part 111. The first support portion 12 includes a first support surface 121 and a plurality of first step surfaces 122, the first step surfaces 122 being recessed from the first support surface 121, the plurality of first step surfaces 122 being disposed at intervals. The second supporting portion 13 includes a second supporting surface 131 and a plurality of second step surfaces 132, the second step surfaces 132 are formed by recessing from the second supporting surface 131, the plurality of second step surfaces 132 are arranged at intervals, the first supporting portion 12 and the second supporting portion 13 are arranged on two sides of the bearing portion 11 along the first direction 112, and the first step surfaces 122 and the second step surfaces 132 are staggered along the first direction 112. When stacking the trays 1, the trays 1 are horizontally rotated by 180 °, so that the first support portion 12 of the first tray 1 corresponds to the second support portion 13 of the second tray 1, the second support portion 13 of the first tray 1 corresponds to the first support portion 12 of the first tray 1, and the first step surface 122 and the second step surface 132 are staggered in the first direction 112, so that the first step surface 122 of the first tray 1 and the second step surface 132 of the second tray 1 are staggered in the height direction, and the first step surface 122 of the first tray 1 corresponds to the second support surface 131 of the second tray 1 in the height direction; the second step surface 132 of the first pallet 1 is thus shifted in the height direction from the first step surface 122 of the second pallet 1, so that the second step surface 132 of the first pallet 1 corresponds in the height direction to the first support surface 121 of the second pallet 1. Thus, the first tray 1 can be prevented from falling into the second tray 1 by placing the trays 1, and a distance is reserved between the first tray 1 and the second tray 1, so that the first tray 1 and the second tray 1 are prevented from being mutually extruded, and the parts 111 in the trays 1 are prevented from being crushed.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A tray, comprising:

the bearing part is used for placing parts;

the first support part comprises a first support surface and a plurality of first step surfaces, the first step surfaces are formed by sinking from the first support surface, and the plurality of first step surfaces are arranged at intervals;

the second supporting part comprises a second supporting surface and a plurality of second step surfaces, the second step surfaces are formed by sinking from the second supporting surface, a plurality of second step surfaces are arranged at intervals, the first supporting part and the second supporting part are arranged on two sides of the bearing part along the first direction, and the first step surfaces and the second step surfaces are staggered along the first direction.

2. A pallet as claimed in claim 1, characterised in that:

the bearing part is provided with a plurality of accommodating cavities, a plurality of accommodating cavities are arranged at intervals, and the accommodating cavities are used for accommodating parts.

3. A pallet as claimed in claim 2, characterised in that:

the bearing part is provided with a third step surface formed by concave depression;

the bearing part comprises a first side wall and a second side wall, the first side wall and the second side wall form the accommodating cavity, the first side wall and the second side wall are oppositely arranged along a second direction, the third step surface is at least arranged on one of the first side wall and the second side wall, and the second direction is perpendicular to the first direction.

4. A pallet as claimed in claim 3, characterised in that:

the accommodating chamber has an opening and a bottom wall, and a distance between the first side wall and the second side wall gradually increases from the bottom wall toward the opening.

5. A pallet as claimed in claim 3, characterised in that:

the tray further comprises a plurality of fixing structures, the fixing structures are arranged in the accommodating cavity at intervals, the fixing structures are connected to the bottom wall of the accommodating cavity and used for positioning and fixing the parts, and a third step surface is arranged between every two adjacent fixing structures.

6. The tray according to claim 5, wherein:

the fixing structure comprises a boss and a positioning rib, wherein the boss is arranged between the first side wall and the second side wall, the positioning rib is distributed in the circumferential direction of the boss, the part is placed on the boss, the circumferential surface of the part is provided with a groove, the groove is matched with the positioning rib, and the positioning rib is used for fixing the part.

7. A pallet as claimed in claim 1, characterised in that:

the second supporting portion is provided with a notch, and the notch is used for distinguishing the placing direction of the tray.

8. A pallet as claimed in claim 1, characterised in that:

the tray further comprises a third supporting part and a fourth supporting part, wherein the third supporting part and the fourth supporting part are arranged on two sides of the bearing part along the second direction, the first supporting part, the second supporting part, the third supporting part and the fourth supporting part are sequentially connected and enclosed around the bearing part, and the second direction is perpendicular to the first direction.

9. The tray according to claim 8, wherein:

the tray further comprises a side wall, wherein the side wall is connected to the periphery of the first supporting part, the second supporting part, the third supporting part and the fourth supporting part, and extends towards a position with the height lower than that of the bearing part.

10. A pallet as claimed in claim 1, characterised in that:

the bearing part is symmetrical along a first axis and a second axis, and the first axis and the second axis are perpendicular.